Metal tie for spring structures



D. T. OWEN ET AL.

METAL TIE FOR SPRING STRUCTURES Filed Nov. 2, 1922 W. G: LEHMAN/Y Patented Aug. 26, 1924.

UNITED STATES ArENT oF-IFIc DAVID T. OWEN AND WESLEY G. LEHMANN, E CLEVELAND, OHIO; SAID LEHIEANN ASSIGNOR T0 SAID OWEN.

METAL TIE FOR SPRING- STRUCTURES.

Application filed November 2, 1922. Serial No. 598,475.

To all whom it may concern."

Be it known that we, DAVID T. OWEN and WESLEY G. LEHMANN, citizens of the United States, residing at Cleveland, in the county of Cuyahoga andState of Ohio, have invented certain new and useful Improvements in Metal Ties for Spring Structures, of which the following is a specification.

This invention pertains to an imp-rovement in a metal tie for spring structures, the object being to provide a simple mode of uniting a plural number of helical springs togther in definitely spaced relation but with a hinge or pivotal movement therebetwcen. The conception involves attaching a metal clip to a spring in such a manner that it becomes a rigid lateral extension thereof and a hinge connection for an adjoining spring, and to prevent disarrangement of the springs an offset or shouldered portion is provided in the connected spring at each side of the point of attachment of the hinge connection, all as herein shown and described and more particularly pointed out in the claims.

In the annexed drawing, Fig. 1 is a plan view of a number of coiled springs united together according to this invention, and Fig. 2 is a side elevation of the same spring structure. Fig. 3 'is perspective view of segmental portions of two springs united together. Fig. 4 is a vertical section longitudinally of the tie on line 4.4 of Fig. 3, and Fig. 5 is a vertical section transversely of the tie on line 5-5 of Fi 3. Fig. 6 is a perspective view of a mofified form of tie member.

The invention comprisesa bed spring or other spring structure composed of a group of helical springs 2 arranged in parallel rows with their respective end loops 3 lying in the same horizontal planes. The adjoining loops 3 of these springs are connected together by metal ties or clips 4 which are made of flat pieces of sheet metal, preferably wide at one end 5 and narrow at the opposite end 6. The wider end5 is curled around the round wire of a loop 3 and then indented medially, the wire being also indented and upset at 6 in the process. In this way the clip is locked against side slip on the wire and also prevented from turning on the wire, the clip becoming in effect a rigid lateral extension of the spring loop incapable of independent movement on the wire. The narrow end 6 is curled around the round wire of an'adjoining loop 3 to provide a hinge eye 7 and the wire is oiiset springs together permits a certain measure of pivotal movement to take place between the adjoining springs but nevertheless holds them fixedly in alignment and spaced relation and the springs can not come into direct contact or interfere with each other when compressedor tilted. The springs as joined work-in unison in carrying a load but being partially hinged together a limited amount of free pla is present to relieve bending strains on t eLwire loop and their connecting clips.

In Fig. 6, a slightly modified form of clip 4: is shown which is of the same width from end to end. Otherwise the clip is made and connected with the springs in the same way as clip 4.

What we claim, is:

1. A spring structure comprising adjoining wires and a metal connecting clip therefor, said clip and one of said wires being locked in rigid union where connected together by an indentation formed in both the wire and the clip, said clip and another of said wires being hinged together.

2. A spring structure, comprising juxtaposed wires, and a clip having a curled portion embracing one wire and indented into the wire to provide a rigid interlocking union adapted to prevent independent rotation of the clip and said wire, and said clip and the other wire being connected in hinged union.

. In testimony whereof we afiix our signatures hereto.

WESLEY G. LEHMANN. DAVID T. OWEN. 

